Tire-shrinking apparatus



( o Model.) 1 Y .E. A. OLIVER.

TIRE SHRINKING'APPARATUS. I N0.369,2O4. w PatentedAug.30, 1887.

"1 224 /%iii "[FIIIIIHiIIIIIlI' N-ITED STATES ATENT FFICE.

ELAM A. OLIVER, OF BELLEVILLE, \VISOONSIN.

TIRE-SHR INKING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 369,204, dated August so. 1887.

Application filed March 25, 1887. Serial No. 232,402. (No model.) I

To aZZ whom it may concern:

Be it known that I, ELAM A. OLIVER, a citizen of the United States, residing at Belleville, in the county of Dane and State of Wisconsin, have invented certain new and useful Improvements in Tire-Shrinking Apparatus; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is arepresentatiou of a side elevation. Fig. 2 is a front elevation. Fig. 3is a detail side View of the shrinkers. Fig. at is a plan view of the same, and Fig. 5 is a detail view of one of the dogs.

My invention relates to improvements in tire-shrinking machines, the objects being to,

shrink the tires quickly and with little labor, and to provide a machine for the purpose of simple construction that will do the work effectually and needs little repair. These ob- 2 5 jects I attain by means of the construction and arrangement of the shrinker-heads and shrinkers and the combination thereof with certain other parts, hereinafter described, and pointed out in the claims hereto appended.

Referring to the accompanying drawings by letter, A designates the frame of the machine, composed of the base-plate a and standard a, rising therefrom, as shown.

a a are similar arms running out horizontally on each side from the standard, and which, bending downwardly, have-their ends or feet bolted to the base-plate a.

B is a foot-lever, provided with a suitable pedal, 1), having its stem bifurcated, with the arms of the bifurcation passing on opposite sides of the standard a suitable distance below the arms a and pivoted upon the horizontal bar I), secured centrally in an opening through the standard.

G O are springs, the coiled portions 0 of which surround the arms of the bar I) on opposite sides of the standard, their upper ends bearing against the horizontal parts of the arms a While their lower ends pass through openings in the corresponding arms of a pin, 0, secured centrally in an opening in the lever B, near the lower ends of the arms of its bifurcation.

Dis an upwardly'standing bar similar to the standard a, both standard and bar having their upper ends provided with similar rectangular shoulders, d d, on their inner or facing edges for the attachment of the shrinkerheads, hereinafter described. The bar D is provided near its lower ends with a longitudinal slot, (1, for the passage of the pin 0', and is pivoted a suitable distance below its upper end between the horizontal arms E, secured upon the standard, on opposite sides thereof, the corresponding ends of the arms being flanged to fit upon the upper and lower edges of a rectangular bracketthat fits around the standard and has arms extending on each side of the bar D. The pivotal bolt d of the bar passes through openings in the arms E and in the arms of said brackets, and engages with a nut to hold the parts tightly in place.

I I are the shrinker-heads, each provided with similar sockets to fit, respectively, upon the upper ends of the standard and bar D till their lower edges rest upon the shoulders d d.

The movable head 1 has the curved horizontal plate or flange part t and the vertical part i bent downwardly at its upper end parallel to its rising portion, and provided with bearings i for thejournals of the dog J, provided at its free ends with the steel grippingplate 9', bolted to the shouldered lower part of the dog in such manner that it can be taken off, reversed in position, and again secured to the dog, so as to use and economize the upper end when the lower end has lost its edge. The journal on the side of the part t" of the head is extended and bent at right angles to form a lever by means of which to turn the dog upward and downward.

The stationary head I has a flange or plate part, 2', similar to but longer than that of the opposite head, I, both having an upward curvature to accommodate the tire. It has also an upwardlyextending part, i, similar to that of the head I, and similarly bent downward, for the purpose of forming bearings 2' for the journals of the dog J, provided with a handle and with a steel gripping-plate, j, similar to that of the opposite head.

K is a clamping-plate having an upwardly extending arm, 7;, provided with a longitudinal slot, 7;, through which extends a guidepin, 7c, headed on its end to retain the arm, and standing from the upright part i of the head I.

L is a pin standing outward from the arm 7., and passing through a vertical slot, Z, in the part i of the head I.

M is a lever pivoted on the outer surface of the part 1 and having the pin L passing through its inner arm, in, at a suitable point.

m is a collar on the said pin, against the outer surface of which the lever rests; and m? is a coiled spring bearing against the lever and against the inner surface of a collar, m, on the end of the pin, so as to face the lever inward.

N is a curved rack made on the outwardlyturned corresponding edge of the part i, and adapted to engage the inwardly-turned edge, a, of the inner arm, in, adjacent to its point, so as to hold said arm, and consequently the clamping-plate K, at any desired elevation w thin the limits of their range of movements.

In operation the tire is placed upon the plate or flange part i of the heads and the clamp 1ng-p1ate K brought down upon it to keep it from slipping, the said plate being vertically ad ustable to suit the thickness of the tire. The gripping-plate of the dog J then has its edge brought down on the tire, the tire is heated to redness or whiteness between the two heads, the gripping plate j of the dog J brought down on the tire, and the head 1' moved toward the head I by means of the lever, pedal, and bar D, causing the heated part of the tire to be shortened or driven in on itself and the tire to be consequently shrunken. The springs C 0 force the bar D away from the standard when the pedal is released.

The machine as described forms a simple, compact, effective, and easily-operated tireshrinker, and one that will be durable and not need frequent repairs.

I am aware that the standard-bar D, bifurcated lever, with its pedal, and springs C C, are not new, and such I do not claim, broadly, as they are included in patent granted to me January 20, 1885, and numbered 311,088.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s

1. The combination, in a tire'shrinking machine, with the vertical standard and pivoted bar D, actuated by mechanism substantially as described, of the shrinker-heads I 1, provided with sockets to fit on the upper ends of said standard and bar,with curved horizontal flange portions to sustain the tire, and with vertical extensions above said flange portions, the dogs provided with journals, having bearings in said extensions, and with handles extending from the journals 011 one side and arranged to be turned down on the tire, the clamping-plate, and means, substantially as described, whereby the clamping-plate maybe held down 011 tires of different thicknesses, substantially as specified.

2. In a tire-shrinking machine, the combination, with the vertical standard and pivoted bar I), actuated by mechanism substantially as described, of the shrinker'heads I I, fitted to the upper ends of said standard and bar, having the flange portions to sustain the tire and the vertical portions above the same, the dogs provided with journals having hearings in said vertical portions of the shrinker-heads, and with handles to turn them up and down, and the reversible steel gripping-plates detaehably secured to the dogs, substantially as specified.

3. In a tireshrinking machine, the co1nhi nation,with the vertical standard and pivoted bar D, actuated by means substantially as described, of the shrinkerheads fitted on the upper ends of said standard and bar, and provided with flange portions to sustain the tire, the dogs provided with handles and reversible steel gripping-plates and journaled in the shrinker-heads, the clamping-plate K, provided with the slotted arm is, the pin extending through said slot, the pin L, passing through the slot Z in the shrinker-head I and provided with the collars m" and m, the lever M, pivoted on the head I, the coiled spring a", the rack N, and bent edge a of the lever M to engage said rack, substantially as specified.

In testimony whereof I alfix my signature in presence of two witnesses.

ELAM A. OLIVER.

\Vituesses:

CHAS. W. DERRICKSON, R. \V. Mann's. 

